Armor for pneumatic tires



A. R. BRUCE.

ARMOR FOR PNEUMATIC TIRES.

APPLICATION FILED APR.2, 1921.

Patented Mar. 14-, 1922.

Kazan atkoz my ALBERT, a. BRUCE, or DETROIT, MICHIGAN.

ARMOR FOR PNEUMATIC TIRES.

1,4ifi9,522.

Application filed April 2,

To all whom it may concern Be it known that I, ALBERT R. BRUCE, citizen of the United States, residing at Detroit, county of lVayne, State of Michigan, have invented a certain new and useful Improvement in Armors for Pneumatic Tires, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to tires for automobiles andan object of my improvementis' to provide a means for preventing the puncturing and wear of automobile tires, thatshall not impair the resiliency of the same and that shall be effective and durable.

In the accompanying drawings:

Figure 1 is the side'elevation of a tire with the apparatus embodying vmy invention attached thereto.

Fig. 2 is a cross-section of-the same on the line Il-II of Fig. 4.

Fig. 3 is a detailed plan "view of a part of the tread of the same,

Fig. i is a detailed side elevation of a part of the tire rim and apparatus embodying my invention.

Figure 5 is detailed plan view of one of the transverse strips before it is bent to the shape of the tire, and adjusted to position.

Fig. 6 is a section on the line VIVI, Fig. i.

a indicates a pneumatic tire of any usual construction. 5 Z) are wires bent into circular shapes to fit around the tire, one upon each side thereof and just below the largest diameter in cross-section of said tire. 6 indicates a turn-buckle by which annular wires 6 b may be loosened or tightened, or their tension adjusted. These annular wires constitute holding rings. 7

0 indicates strips of steel, each of which has a broad central part which contracts to an extended tongue cat each end. 0 are apertures formed through the broader portion of the strip 0 toward the ends and at the center thereof. The strip 0 is laid transversely across the tread of the tire a, the tongues c passing under, around and over the wires 1) 6, their ends engaging in the apertures 0 0 so as to form loops 0*.(Fig. 2) engaging the wires 2) 6. A series of strips 0 are thus laid across the tread of Specification of Letters Patent. Patented B13 14, 1922,

1921. Serial No. 457,963.

the tire and. extend all around the tire. The edges of said strip on the tread being vcontiguous and adjacent strips overlapping each other as shown at 0' 1n Flg. 4, towards the ends of the broader portions of said strips upon each side of the tread. The

wires 6 b may be adjusted by means of a turn buclgle b to bring aproper'tension of the strips 0 upon the tread of the tire a.

A number of the adjacent strips 0 are formed with larger loops 0 than the others,

so as to engage over the turn-buckle d (Z lndlcat-es plates of the form shown in Fig. 3; that is to say,of a substantially rec-" tangular form but having projecting portions (i on one side and corresponding rethat a single strip shall extend over one of the strips, 0 and half way over the adjacent strip upon each side. A strip cl is riveted, orwelded, to everyother strip c,the tongues (Z engaging within a. recess (Z 2 By this construct-ion the steel plates 03 come in contact with the road and cannot be punctured. While each of said plates or a number of adjacent plates will readily yield to the pressure upon the tread following the giving of the tire, and will return to. place when the tire again expands after the re moval of the deforming force, the flexible strips 0 follow the variation in form of the tire.

vVha-t I claim is:

cesses (Z upon the other; side. The length A tire protector, made flexible by the sides of the tire which prevents them from binding, in combination with an annular wire upon the side and concentric with said tire, said strips engaging said Wire at their ends with a loop, made bynarrowing the striptwo inches or more at the end and bending outwardly from the tire and se curely fastening, to hold and prevent tear-. ing of the fabric of the tire, reinforced at the point of contact with'the road by a contiguous series of hardened steel plates, fastened to each alternate strip, to take the wear, said platesv forming a contlnuous 'circle when not depressed. In testimony whereof I sign this speclfica- ALBERT a. nation;

tion. 

